AtomicInteger (Java Platform SE 6) function windowTitle() { if (location.href.indexOf('is-external=true') == -1) { parent.document.title="AtomicInteger (Java Platform SE 6)"; } } Overview  Package   Class  Use  Tree  Deprecated  Index  Help  Java™ PlatformStandard Ed. 6  PREV CLASS   NEXT CLASS FRAMES    NO FRAMES     All Classes SUMMARY: NESTED | FIELD | CONSTR | METHOD DETAIL: FIELD | CONSTR | METHOD java.util.concurrent.atomic Class AtomicInteger java.lang.Object java.lang.Number java.util.concurrent.atomic.AtomicInteger All Implemented Interfaces: Serializable public class AtomicIntegerextends Numberimplements Serializable An int value that may be updated atomically. See the java.util.concurrent.atomic package specification for description of the properties of atomic variables. An AtomicInteger is used in applications such as atomically incremented counters, and cannot be used as a replacement for an Integer. However, this class does extend Number to allow uniform access by tools and utilities that deal with numerically-based classes. Since: 1.5 See Also:Serialized Form Constructor Summary AtomicInteger()           Creates a new AtomicInteger with initial value 0. AtomicInteger(int initialValue)           Creates a new AtomicInteger with the given initial value.   Method Summary  int addAndGet(int delta)           Atomically adds the given value to the current value.  boolean compareAndSet(int expect, int update)           Atomically sets the value to the given updated value if the current value == the expected value.  int decrementAndGet()           Atomically decrements by one the current value.  double doubleValue()           Returns the value of the specified number as a double.  float floatValue()           Returns the value of the specified number as a float.  int get()           Gets the current value.  int getAndAdd(int delta)           Atomically adds the given value to the current value.  int getAndDecrement()           Atomically decrements by one the current value.  int getAndIncrement()           Atomically increments by one the current value.  int getAndSet(int newValue)           Atomically sets to the given value and returns the old value.  int incrementAndGet()           Atomically increments by one the current value.  int intValue()           Returns the value of the specified number as an int.  void lazySet(int newValue)           Eventually sets to the given value.  long longValue()           Returns the value of the specified number as a long.  void set(int newValue)           Sets to the given value.  String toString()           Returns the String representation of the current value.  boolean weakCompareAndSet(int expect, int update)           Atomically sets the value to the given updated value if the current value == the expected value.   Methods inherited from class java.lang.Number byteValue, shortValue   Methods inherited from class java.lang.Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait   Constructor Detail AtomicInteger public AtomicInteger(int initialValue) Creates a new AtomicInteger with the given initial value. Parameters:initialValue - the initial value AtomicInteger public AtomicInteger() Creates a new AtomicInteger with initial value 0. Method Detail get public final int get() Gets the current value. Returns:the current value set public final void set(int newValue) Sets to the given value. Parameters:newValue - the new value lazySet public final void lazySet(int newValue) Eventually sets to the given value. Parameters:newValue - the new valueSince: 1.6 getAndSet public final int getAndSet(int newValue) Atomically sets to the given value and returns the old value. Parameters:newValue - the new value Returns:the previous value compareAndSet public final boolean compareAndSet(int expect, int update) Atomically sets the value to the given updated value if the current value == the expected value. Parameters:expect - the expected valueupdate - the new value Returns:true if successful. False return indicates that the actual value was not equal to the expected value. weakCompareAndSet public final boolean weakCompareAndSet(int expect, int update) Atomically sets the value to the given updated value if the current value == the expected value. May fail spuriously and does not provide ordering guarantees, so is only rarely an appropriate alternative to compareAndSet. Parameters:expect - the expected valueupdate - the new value Returns:true if successful. getAndIncrement public final int getAndIncrement() Atomically increments by one the current value. Returns:the previous value getAndDecrement public final int getAndDecrement() Atomically decrements by one the current value. Returns:the previous value getAndAdd public final int getAndAdd(int delta) Atomically adds the given value to the current value. Parameters:delta - the value to add Returns:the previous value incrementAndGet public final int incrementAndGet() Atomically increments by one the current value. Returns:the updated value decrementAndGet public final int decrementAndGet() Atomically decrements by one the current value. Returns:the updated value addAndGet public final int addAndGet(int delta) Atomically adds the given value to the current value. Parameters:delta - the value to add Returns:the updated value toString public String toString() Returns the String representation of the current value. Overrides:toString in class Object Returns:the String representation of the current value. intValue public int intValue() Description copied from class: Number Returns the value of the specified number as an int. This may involve rounding or truncation. Specified by:intValue in class Number Returns:the numeric value represented by this object after conversion to type int. longValue public long longValue() Description copied from class: Number Returns the value of the specified number as a long. This may involve rounding or truncation. Specified by:longValue in class Number Returns:the numeric value represented by this object after conversion to type long. floatValue public float floatValue() Description copied from class: Number Returns the value of the specified number as a float. This may involve rounding. Specified by:floatValue in class Number Returns:the numeric value represented by this object after conversion to type float. doubleValue public double doubleValue() Description copied from class: Number Returns the value of the specified number as a double. This may involve rounding. Specified by:doubleValue in class Number Returns:the numeric value represented by this object after conversion to type double. Overview  Package   Class  Use  Tree  Deprecated  Index  Help  Java™ PlatformStandard Ed. 6  PREV CLASS   NEXT CLASS FRAMES    NO FRAMES     All Classes SUMMARY: NESTED | FIELD | CONSTR | METHOD DETAIL: FIELD | CONSTR | METHOD Submit a bug or featureFor further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples. Copyright 2009 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.